Introduction:
Colour coated coil is a product made from hot-dip galvanised sheet, hot-dip aluminium zinc plated sheet, electro galvanised sheet, etc., which is pre-treated (chemical degreasing and chemical conversion treatment) and then coated with one or several layers of organic paint and subsequently baked and cured. Because of the coating of different colours of organic paint coloured steel coil and so named, referred to as colour coated coil.
The use of hot-dip galvanised steel strip as the substrate of the colour coated steel strip in addition to the zinc layer protection, the zinc layer on the organic coating plays a role in covering and protecting the steel strip to prevent rust, the service life of the steel strip is longer than the galvanised strip, about 1.5 times.
Matt Textured Colour Coated Steel Sheet begins with a hot-dip galvanized alloy steel plate as its substrate. Using a continuous roller coating production method, special additives are incorporated into the coil topcoat. After baking, this creates a distinctive, fishing net-like pattern effect. These sheets can be professionally customized to meet various customer specifications, including different sizes, depths, and shades of texture patterns, offering a wide range of aesthetic and functional options.
Classification by Coating Performance
Based on the performance characteristics of the organic coating, the plates can be classified as:
- High weather resistance coating plate
- High temperature resistant coating plate
- Self-extinguishing coating plate
- Sterilization coating plate
- Non-stick snow coating plate
- Fingerprint-resistant coating plate
- Self-lubricating coating plate
Usage of different coating structures:
2/1: The corrosion resistance and scratch resistance of single layer back coating is poor, but it has good adhesion, mainly used for sandwich panels.
It is mainly used for sandwich panels;
2/1M: backcoat with good corrosion resistance, scratch resistance and moulding properties, good adhesion, suitable for single-layer compression moulding panels.
2/1M: good corrosion resistance, scratch resistance and moulding properties, good adhesion, suitable for single-layer pressboards and sandwich panels.
2/2: double-layer backing paint with good corrosion resistance, scratch resistance and processability, mostly used for single-layer pressboards, but with good adhesion.
Most of them are used for single-layer moulding board, but its adhesion is not good, and it is not suitable for sandwich board.
Selection of Coatings:
The coatings applied to colour coated coils are chosen based on the specific environmental conditions and intended use. Different resin types provide varying levels of durability and performance:
- Polyester (PE) and Silicone Modified Polyester (SMP): Suitable for general-purpose applications where moderate weather resistance and aesthetic appeal are required.
- Polyvinyl Chloride Plastisol (PVC): Offers enhanced flexibility and impact resistance, commonly used in applications requiring resilience to harsh weather conditions.
- Polyvinylidene Chloride (PVDC): Provides excellent barrier properties against moisture and chemicals, suitable for applications demanding superior protection.
Users can select the appropriate coating based on their specific application needs, ensuring optimal performance and longevity of colour coated coils in diverse environments and industries.
Detailed Parameters:
| Pre-Painted Galvalume Steel Coils |
| Commercial Quality Steel | ASTM A755M-03 | EN10327-2004 | JIS G 3322:2012 |
| CS | DX51D+AZ | CGLCC |
| Structural Quality Steel | SS GRADE 230 | S220GD+AZ | CGLC340 |
| SS GRADE 255 | S250GD+AZ | CGLC400 |
| SS GRADE 275 | S280GD+AZ | CGLC440 |
| SS GRADE 340 | S320GD+AZ | CGLC490 |
| SS GRADE 550 | S350GD+AZ | CGLC570 |
| | S550GD+AZ | |
| Pre-Painted Galvanized Steel Coils |
| Commercial Quality Steel | ASTM A755M-03 | EN10327-2004 | JIS G 3312:2012 |
| CS | DX51D+Z | CGCC |
| Structural Quality Steel | SS GRADE 230 | S220GD+Z | CGC340 |
| SS GRADE 255 | S250GD+Z | CGC400 |
| SS GRADE 275 | S280GD+Z | CGC440 |
| SS GRADE 340 | S320GD+Z | CGC490 |
| SS GRADE 550 | S350GD+Z | CGC570 |
| | S550GD+Z | |
| SPECFICATION |
| | PRE-PAINTED GALVANIZED STEEL COIL | PRE-PAINTED ALUZINC STEEL COIL |
| Thickness | 0.15MM--1.50MM(BMT) | 0.15MM--1.50MM(BMT) |
| Width | 900MM-1340MM | 900MM-1340MM |
| Zinc/AZ | 30g/m2-275g/m2 | 30g/m2-185g/m2 |
| Base Metal | Galvanized Steel Coil | Galvalume/ Aluzinc Steel Coil |
| Paint Coating System | POLYESTER(PE),RMP, SMP,Super-SMP, HDP,Super HDP, PVDF |
| Color | RAL / Customized |
| Coil weight | 1.5MT-10MT |
| Coil ID | 508MM OR 610MM |
| * HARD QUALITY GALVANIZED STEEL(HRB75-HRB90) AVAILABLE ON CUSTOMER'S REQUEST |
| Coating performance |
| CATEGORY | T Bending | Impacting | Salt spray test(hours) | MEK | Hardness | Gloss 60° | Color Tolerance ΔE |
| PE | ≤3T | ≥9 | ≥500 | ≥100 | ≥F | 10-85 | ≤0.8 |
| SMP | ≤3T | ≥9 | ≥500 | ≥100 | ≥F | 10-85 | ≤0.8 |
| HDP | ≤2T | ≥9 | ≥1000 | ≥100 | ≥HB | 10-85 | ≤0.8 |
| PVDF | ≤2T | ≥9 | ≥1000 | ≥100 | ≥HB | 10-85 | ≤0.8 |
Test Process & Results:
Paint Suppliers & Partners:
We only choose the top-level paint suppliers for our pre-painted steel coils and sheets,
AkzoNobel, Sherwin-Williams Valspar, Beckers, PPG Industries, Nippon, KCC are our solid paint suppliers.
Their best paint materials decide our steel coils quality.
Package & Delivery Shipment :
Delivery time: 30 days deliver to loading port
Shipment Methods: Container, Breakbulk, Railway, Trucks
Projects:
Product Tags:
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